Thread: filter media...what do you use and why?
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Old 10-14-2005   #3 (permalink)
kevan
Sansai
 
Join Date: Jul 2005
Posts: 191
the white coral stuff was branded as `merlin` when i bought some,

i think its calcified coral or something like that,

is alpha grog and lava rock the same thing?

kevan.
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